Perhaps they could have 4 tips like a Mercedes AMG, or trapezoidal tips similar to a Lexus ISF. They coud go for 5" tips on either side. As Marlin said, I don't think side exhausts are in keeping with a current model!

Side exit exhausts won't get passed in Euro or Australian design laws, Viper had the same issues.
Would be short sighted of them to release it that way and then have to find an alternate solution for export markets. IMO of course

Do you mean side as in under/in the rocker or behind the rear wheels, but going out the side? If it is the first....that is going to be bada$$...straight viper style! Would you consider this source reliable on this?

While I like the look of the centered exhaust on my SRT, I would give it up to have a spare tire, trailer hitch, and a clear rear window in the cold. I notice that the exhaust seems to flow up the back of the car when driving in the cold, fogging up the glass. The center exhaust is also good for burning your leg when getting stuff out of the rear hatch.